diff --git a/src/binary.h b/src/binary.h
index 1bd560f9e5dd163ab35f498ca8165efb799fa02d..26a0a6da37b69afe108205636263250579754494 100644
--- a/src/binary.h
+++ b/src/binary.h
@@ -8,9 +8,7 @@
 #include <inttypes.h>
 #include <stdio.h>
 
-#ifndef _DTYPES_H
 #include "dtypes.h"
-#endif
 
 #ifndef HOST_ENDIANNESS
 #ifdef __cplusplus
diff --git a/src/dtypes.h b/src/dtypes.h
index f69ea496b899e201d987c9e17c4d38511012c09d..ca849ce18f52741098ae033c8fa85482934e3f0c 100644
--- a/src/dtypes.h
+++ b/src/dtypes.h
@@ -1,5 +1,5 @@
-#ifndef _DTYPES_H
-#define _DTYPES_H
+#ifndef DTYPES_H
+#define DTYPES_H
 
 #include <stdio.h>
 #include <limits.h>
@@ -45,7 +45,7 @@
 #define  UINT32   unsigned INT32
 #define  UINT64   unsigned INT64
 
-#endif  /* _DTYPES_H */
+#endif  /* DTYPES_H */
 /*
  * Local Variables:
  * c-file-style: "Java"